There are so many genres, that North American comic books, just don't cover, so I say, draw what makes you happy and enjoy, and I'm sure you'll find an audience that loves and appreciates it, just as much as you do.

And my only other piece of advice, based on having checked out your gallery, is to start writing and drawing your story, the only way to get better and improve your ability to draw comic book pages is by actually doing it, since it's a whole other beast and discipline from drawing a pin up or character design.

There are a lot of aspects that people don't realize that goes into drawing comic book pages and panels, composition/layout, flow, camera angles, lighting/shadows, backgrounds, and many other facets.